EM9201/02 copyright ? 2009, em microelectronic-marin sa subject to change without notice 05/09 ? rev. b phone: +41.32.755-5111, fax: +41.32.755-5403 www.emmicroelectronic.com info@emmicroelectronic.com world?s first fully integrated single-cell battery 2.4 ghz transceiver description the EM9201/02 is a low-voltage 2.4ghz transceiver i c with built-in link-layer logic permitting proprieta ry wireless links in the 2.400 ? 2.485 ghz ism band. it has a r adio core with a low-if architecture and gfsk modulation scheme being compliant with the emerging bluetooth low energy technology standard. control of the link-layer logic is possible though the spi interface using an external host-controller. an fpg a bridge is included in the circuit such that with an extern al fpga any protocol compatible with the rf characteristics can also be emulated through the spi port of the EM9201 /02. the EM9201/02 can be operated from a single 1.5v ba ttery by making use of the on-chip step-up (boost) dc/dc converter. this converter is designed to support an extra load such as a low-power microcontroller (host) or sensor interface circuit with a dedicated application prof ile. the EM9201/02 can also operate without the dc/dc converter, when supplied from a 3 v battery or any other source such as an external ldo regulator. no extern al coil is needed then. EM9201 : up to 1 mb/s on air data rate em9202 : up to 2 mb/s on air data rate chip versions, programmable by metal mask option: v1: with dc/dc converter for 1.5v battery v2: w/o dc/dc converter for any voltages 1.9 ? 3.6v typical application schematic features single cell 1.5v battery operation (alkaline aa, a aa) operation down to v bat = 0.8 v (for start-up --> 1.0v) 3 v lithium battery as alternative bluetooth low energy-compliant gfsk modulation low drift of pll frequency by design on air data rate: 1mb/s for EM9201, configurable 1mb/s or 2mb/s for em9202. programmable rf output level: -20 dbm ? + 4dbm in 8 steps no antenna matching elements needed through appropriate pcb antenna design : 200 differential impedance of antenna port low-cost 26mhz xtal bld function: battery level detection in accordanc e with selected battery current consumption (on v cc , v cc =2.1v, 2mb/s ) 12.5 ma in rx 11.5 ma in tx (0dbm output power) 3.0 a in sleep-mode (dc/dc running on rcosc) 1) 0.8 a in power-down mode (3v version, dc/dc off) 1) external load reduced to < 500a mlf24 4x4 package applications remote sensing in general wireless mouse, keyboard etc. wireless sensors in watches wireless sports equipment alarm and security systems pin assignment em microelectronic - marin sa em 9201/02 mlf24 4x4 sdo sw_dcdc avdd_pa xtal1 sdi sck vdd vss vss_dcdc vcc1 vcc2 bias_r vbat avss_pll2 avss_pa antn antp avss_rf cs xtal2 avss_pll1 ck_fpga data_fpga irq host controller / sensor-interface sensor fpga vbat vcc2 sw_dcdc irq cs sck sdi sdo xtal1 xtal2 vdd avdd_pa avss_pa antp antn bias_r vss vss_dcdc EM9201/02 ck_fpga data_fpga step-up conversion option; for simplicity, not all supply pins indicated !
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